That's a good point but I don't think it does, not that I've seen. Older houses can have thicker walls, at my FiL's house WiFi barely goes through one wall.
I have family in a new build in Cardiff, and mobile phone signals don't get indoors, whereas outside all 4 networks have full signal. These operate at frequencies under 5 GHz, which is why such a push for all operators to enable WiFi calling.
Yes, the older stone walls also act as a radio block, as do multiple layers. Mesh systems help, but are often planned for US homes where they use different construction materials.
2.4 GHz can be better for penetration at the expense of throughput. 5GHz and the potential 6 GHz, are good for throughput, but may only cover a room!
20 years of broadband connectivity since 1999 trial - Live BQM